Round nail brush



FIG. 1 is a front elevational view of the round nail brush (the rear view being identical to the front).

FIG. 2 is a right side view of the nail brush (the left side view being identical to the right view).

FIG. 3 is a top view of the nail brush; and,

FIG. 4 is bottom view of the nail brush. 

The ornamental design for a round nail brush, as shown and described. 